Using High-Density Digital Well Log Analysis to Interpret the Sequence Stratigraphic Characteristics of the Eagle Ford Shale, Central Texas

Mark Robinson
Drillinginfo, Austin, Texas 78763

The Cretaceous aged Eagle Ford Shale of Central Texas is thought to have been deposited during a period of high sea levels. Outcrop studies have been used to as evidence for the interpretation of successive transgressive, condensed and high-stand periods within the Eagle Ford interval. This study utilizes almost 1000 digitized well-logs that penetrated the Eagle Ford Shale to create a series of high-density cross-sections that were used to generate an allostratigraphic interpretation. This detailed interpretation generated a framework of surfaces that could be classified as low-order sequence boundaries and intervening parasequence boundaries based upon the application of well-log facies analysis.

AAPG Search and Discovery Article #90158©2012 GCAGS and GC-SEPM 6nd Annual Convention, Austin, Texas, 21-24 October 2012